Revetment.



Patented June 22, 1915.

2 SHEETS-SHEET I.

JJ Jlforney J. MCGILLIVRAY.

REVETMENT.

APPLICATION FILED OCT-6.1913.

Fay.

Witnesses J. MCGILLIVRAY.

REVETMENL APPLICATION FILED OCT. 6.1l9l3.

1 1 44, 1 4:3. Patented June 22, 1915.

2 SHEETS-SHEET 2.

JAMES MGGILLIVRAY, 0F SACRAMENTO, CALIFORNIA.

REVETMENT.

Specification of Letters Patent.

Patented J une 22, 191.5.

Original application iled'May 17, 1913, Serial Np. 768,293. Divided and this application filed October 6, 1913. srialuo. 793,579.

To all whom it may concern Be it known that I, JAMES MCGILLIVRAY, a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented certain new and useful Improvements in Revetments, of which the following is a. .specification. l

This invention has been divided out of the original application filed May 17, 1913, Ser. No. 7 68,293, relates to the protection of levees, embankments, dams or other natural or artificial structures, from erosion, wear, damage or injury by action of Water, or other disintegrating or devastating force, and has for its object to render the protection of levees 'and other structures above mentioned more expeditious, permanent, durable, practical, efiicient and considerably lcheaper and more economical.

To this end the present invention contemplates the formation of a revetment from slabs or blocks of concrete or other suitable composition or material, which blocks may be of any suitable size and shape and may be made at any convenient place, whence to be taken to the place of use and joined to gether in sufficient numbers to cover the area to be protected.

The invention therefore consists in the structure of parts and in their association, combination and arrangement for the purpose specified, substantially as hereinafter set forth and claimed.

That the invention may be fully and concisely disclosed, reference is made to the accompanying drawings, which form a part of this specification and in Which-d Figures 1 and 2 represent in edge view and end view, respectively, the preferred form of revetment unit or slab; Fig. 3 shows a face view of one such slab complete and a portion of another with the preferred form of tie for joining the slabs together; Fig. Lf and Fig. 5 are edge views of end portions of adjacent slabs illustrating the manner of applying said tie; Fig. 6 is a partially sectionized edge view, on an enlarged scale, showing modifications in the formation of slabs and in the tie also; Fig. 7 is a face view of the adjacent ends of four slabs illustrating the use of the tie of Fig. G and also showing how a revetment embodying this invention may be made without using anchor cables; Figs. 8, 9 and 1() are face, end

and edge views, respectively, of a modified form of slab with different reinforcement and tying means; and Figs. 11 and 12 represent, on an enlarged scale. the manner of ntying such modified slabs together and to the anchor cables.

The revetment of this invention presents the combination with cables of reinforced concrete slabs in a manner such that the revetment or mattress will be sufficiently flexible to conform to the surface to be protected and at the same time have the joints between the slabs close enough to prevent erosion through them.

The invention also contemplates the joining of the units or slabs of the revetment or mattress in a manner such that anchor cables may be dispensed with, succeeding longitudinal series of slabs being tied directly to one another.

The units of the revetment are preferably blocks or slabs. from two inches in thickness to six inches. byv from one foot in width to three feet and from two to ten feet in length. The slabs, constructed at the. point of manufacture, are with the cables and other fastenings transmitted to the point of use and there secured together in place by means of the cables and said other fastenings or by such fastenings alone,'as the case maybe, substantially as hereinafter set forth.

Referring specifically to the drawings, (Figs. 1-5) it will be seen that the units or slabs 13 have their corners and particularly their edges rounded; otherwise these slabs are of the form and Structure set forth in the original application above referred to. They have tie holes 14, reinforcing rods 15 about said holes and extending from one to another thereof, and they have the cable grooves 16 to take cables 17. By tying adjacent slabs together at their ends across the cables they are held to one another and to the cables, which lie withinthe channels formed by adjacent end grooves. The rounded or convex edges of the Slabs permit the necessary flexure of the mattress even when the Slabs are drawn close together.

The required flexibility of the mattress may be obtained by rounding only one of two adjacent edges, as seen in Fig. 6, where the edge of slab 18 is left square and the edge of slab 19 is rounded. This figure also shows clearly the manner of reinforcing the tie holes 14.

The desired flexibility may also be secured by making adjacent edges concave and convex, respectively, as shown in Figs. 8-12. With slabs having any of these forms of edges ties of various forms may be used. One desirable form of tie consists of a rod 20, Fig. 4, passed through holes of adjacent blocks, the upwardly extending ends being then bent toward one another and again upwardly and a ring or link 21 slipped over them, Fig. 5, when they are bent outwardly and downwardly as seen in Fig. 3. This form of tie may be modified and the application thereof simplified by lengthening the link 21, or substituting therefor a plate or strap 22, Figs. 6 and 7. In which case the rod 20 has its ends simply bent outwardly over the ends of the strap. This last form of tiereadily lends itself to that use whereby the cables 17 may be dispensed with as illustrated in-Fig. 7. There the slabs are joined together end to end by the U-shaped tie and strap 22, as in Fig. 6, and extra straps or links 23 are used to join one longitudinal series of slabs to the next. The cable grooves are obviously dispensed with in this case as seen in Fig. 6. The reinforcing rods may be variously disposed and may be made to protrude from the slabs so that the ends thereof may serve to tie the slabs together and to anchor cables also if desired. Such changes may be effected iriithe manner illustrated in Figs. 8-12. Therein the ends of the reinforcing rods 24 protrude into the cable grooves 16 and are readily tied together around the cable 17, registering transverse grooves 25 being formed in the ends of the slabs to permit the ready twisting together of the said ends in effecting the tying. Reinforcing rods 24 may be joined together within the slabs by any number of cross links 26, two such being illustrated in Figs. 9 and 10.

The concavo-convex joint between the slabs, with the'cable in the axis of flexure and the union of the tie rods also at said axis produces an exceedingly flexible revetment and one with close joints between the units.

The invention claimed is:

1. A revetment consisting of slabs of concrete laid with edges in contact one of each pair of Contactin edges being convex for the purpose specied and said slabs having transverse tie holes near their edges, and ties consisting of U-shaped rods passed through approximate holes in adjacent slabs and links through which the ends of said rods also pass and over which their ends are bent down. 2. In a revetment the combination of slabs provided with tie holes near their edges, of U-shaped rods having theirends upwardly extended through tie holes of adjacent slabs, links for joining the ends of each rod, and other links for joining the ends of like rods in adjacent longitudinal series of slabs, whereby the slabs are joined in end-to-end series and said series are joined together.

3. A revetment consisting of adjacent longitudinal series of slabs each of whichvslabs is provided with transverse tie holes at the corners, tie rods joining the slabs in each series, a link uniting the ends of each tie rod across the,joint between the slabs so joined, and other links uniting the adjacent ends of said rods across the joints between adjacent longitudinal series, whereby two tie rods serve to unite adjacent corners of four slabs.

In testimony whereof I aliix my signature in presence of two witnesses.

JAMES MCGILLIVRAY.

Witnesses:

ALICE M. PACHALL, IRVING NEEDHAM. 

